Valve Tests I-2 / I-3 Valve
18 ©Vertical Express
Valve Tests
Relief Pressure Verification
This test ensures that the pipe couplings and valve cannot be damaged if the elevator sys-
tem’s oil flow or platform become restricted.
Stop the power unit immediately if the pressure exceeds 625 PSI.
1. Close the shut-off valve.
2. Install a pressure gauge on the silencer's quick connect.
3. While monitoring the pressure gauge, use a runbug to run the power unit in the up
direction in short bursts. After confirming that the pressure does not exceed 625 PSI,
the pump motor can run constantly to verify the relief pressure setting.
4. If the pressure exceeds 625 PSI, adjust the pressure relief to reduce pressure.
• OUT = Counterclockwise (CCW) = Decrease Relief Pressure
• IN = Clockwise (CW) = Increase Relief Pressure
5. Briefly open the manual lowering valve to relieve pressure from the valve, and confirm
that the valve is fully closed when finished.
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